Rounded staircase baluster



FIG. 1 is a side elevational view of a rounded staircase baluster showing my new design; and,

FIG. 2 is an end elevational view thereof as shown in FIG. 1.

The broken line showing of hand and foot rails is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a rounded staircase baluster, as shown and described. 